POWER SUPPLY OF ASYNCHRONOUS MOTOR Russian patent published in 2018 - IPC H02H7/08 H02H7/85 H02H5/04 

FIELD: electricity.

SUBSTANCE: in the power supply of the asynchronous motor, containing three bridge inverters, fed from the constant voltage network and controlled by three-phase signal source, level converters, phase-voltage peak detectors, average amplitude formation unit, analogue voltage multipliers, voltage transformers, interconnected with adders through outputs, the second outputs of which are outputs of analogue voltage multipliers, the first inputs of which are the outputs of the basic frequency generator, forming phase voltages and synchronized with the supply network, and the second inputs are the output of a nonlinear transformation unit, the input of which is connected to the output of the average amplitude formation unit, the inputs of which are connected to the outputs of peak-detectors, the inputs of which are connected to the outputs of the level converters, the inputs of which are connected to the supply terminals of the motor, which is connected to the outputs of bridge inverters, to the control inputs of which the outputs of the adders are connected, are introduced.

EFFECT: protection of the motor against overheating due to damage to the windings in case of damage to the electric circuit of the rotor and ensuring the uninterrupted operation of the motor in such modes.

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